Eyeglass-fastening.



PATENTED DEC. 20, 1904l No. 778,057.v

F. MICHEL. BYEGLASS FASTBNING. APPLICATION FILED APR. 2e. 1904.

N0 MODEL.

WITNESSES.'

Arron/VHS l Patented December 20, 1904.

PATENT OFFICE.

FREDERICK MICHEL, OF NEW YORK, N. Y.

EYEGLASS-FASTENING.

SPECIFICATION forming part of Letters Patent No. 778,057, dated December 20, 1904.

Application led April Z6, 1904:. Serial No. 204,974.

To all whom t may concern:

Be it known that I, FREDERICK MICHEL, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Eyeglass-Fastening, of which the following is a full, clear, and exact description.

The object of this invention is to provide more superior means than are ordinarily employed for holding together the various parts of an eyeglass. Heretofore this has been done by connecting the nose-piece and spring with the stud by means of a screw running longitudinally of the stud through the spring and the shank of the nose-piece. This arrangement is crude, does not hold the parts securely, and does not present a neat appearance. I have improved this arrangement by providing the stud with a socketand with oppositely-located walls, between which walls the shank of the nose-piece and the spring are placed. A fastening-pin with a square head is passed through the spring and nose-piece shank into the socket in the stud, the square head of the pin lying between the two oppositely-located walls or shoulders on the stud and the pin being held in place by a key which is screwed transversely into the stud and engaged in a peculiarly-formed groove or notch in the side of the pin. This provides a strong and cheap construction and one which presents a far neater appearance than that of the structure now commonly used.

This specification is an exact description of one form of my invention, while the claim denes the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part of this specilication, in 'which similar characters of reference indicate corresponding parts in all the views.

Figure l is a fragmentary front View showing the invention. Fig. 2 is a sectional view of the fastening. Fig. 3 isa section on the line 3 3 of Fig. 2; and Fig. Lis afragmentary longitudinal section of the stud, showing the pin and key before the pin has been forced into proper position.

c indicates the lenses; b, the spring; c, the stud, and 0l the nose-guard. The stud c is into the passage c2 in the stud c and is held in place by means of a set-screw or key f, which is screwed laterally into the stud c, so as to enter a notch c2, formed in the fastening-pin e. The notch e2 has a square shoulder next to its head and a beveled surface running outward from the square shoulder. With this beveled surface the tapered inner end of the key fcoacts, so that as the key is screwed into place the beveled surface of the notch and the tapered end of the key act to force the pin e tightly into its proper position, as shown in Fig. 2. If desired, the pin e may be formed with a continuous annular groove instead of a notch, this groove having a beveled surface the same as that of the notch, as described above.

This provides an extremely strong and simple fastening. The pin e holds the parts b and d in place and at the same time the square head on the pin prevents the pin from turning in the stud. All of the elements are therefore locked securely together, and yet the parts may be very readily disconnected by removing the set-screw or key f and withdrawing the pin e, as will be apparent from the drawings.

Various changes in the form, proportions,

and minor details of my invention may be resorted to at will without departing from the spirit thereof. Hence I consider myself entitled to all such variations as may lie within the scope of my claim. l

Having thus described my invention, I claim as new and desire to secure by Letters Patent- An eyeglass comprising a stud having at its outer end two oppositely-disposed walls spaced apart to form a square recess in the end of IOO the stud, a spring, a nose-guard, the spring and the nose-guard having parts engaged with the stud in the bottom of said recess, a pin for holding the spring and nose-guard in place, said pin having a square head and a smooth body portion with a recess in its side and near its inner end, said recess having an elongated flat bottom inclined downwardly and outwardly,the head corresponding in width to the width of the recess in the end of the stud and being received into said recess and eX- tending out slightly beyond the outer end thereof, the projecting outer end of the head being slightly rounded, the stud being proend of the screw bearing upon the inclined bottom of the cavity.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK MICHEL. Witnesses:

MARoUs KnNYoN, WILLIAM EHRLICH. 

